Mines Quarries Works and Machinery Regulations
120 . Manager to ensure safety underground where diesel units run 121 . Provisions for doors, etc. 122 . Ventilation doors 123 . Provision of mechanical means 124 . Main fans to have automatic alarms 125 . No harmful re-circulation of air permitted 126 . Withdrawal of persons when ventilation is inadequate 127 . Rock machines to be approved 128 .
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